The Flora of Disko Island and Adjacent Coast of West Greenland. 83 
Normally the flower is pure white. On limecharged soil it becomes 
lilac, almost as.the European form. 
Hibernates covered by snow and often by ice. 
A 163. Arabis alpina L. (Incl. A. glabra A. Bl. RowLEE 
& WIEGAND). 
From the herb-mats, copses, springs, water-courses and moss-bogs 
of the lowland ascending to the fell-field and moist edges of moraines. 
Very common throughout the whole area. 
A southern type; the known north limit now lying at about 
12°30’. Nevertheless in South Greenland more frequent in the coast 
region than in the fertile part of the interior. 
Abundantly flowering and fruiting. 
Hibernates covered by snow. 
A 164. Arabis Holboelli Horn. (Turritis retrofracta (Ноок.). 
On sunny, not too dry slopes. 
Disko: The south coast near Godhavn 69°15’ from several places (several 
collectors, for instance, Horgørr); Mellemfjord 69°42’ (Th. Fr.). 
Mainland: Tasiussarssuaq (Bg.; Bl.); Christianshaab (Sor.); Jakobshavn 
(Holbøll); Sarqaq about 70° (V.). Common in the region of Holsteinsborg; espe- 
cially in the Fjords. 
South of the area rather common till 64°, but south of this latitude 
only a single specimen is known from about 61° (Ros.). 
In spite of this it must be stated as a decided southern type 
according to its occurrence in America. 
Abundantly flowering and fruiting. 
Certainly always covered by snow during winter. 
i 165. Arabis Hookeri LANGE (Turritis mollis Hook.). 
In favourably situated and rather moist places. Rare ånd local. 
Disko: Without locality recorded by VArL; not re-found. 
Mainland: Eqe 69°42’ near the glacier (Р.); №. Stromfjord: Amitsuarssuk 
(Korn.?); Sanerut (Korn.); №. Isortog (V.); the fjords inland from Holsteinsborg: 
numerous places (several collectors). 
A northern type; south of the area only observed in a few places, 
the southmost at about 64°. North of the area extraordinary many 
localities in the southmost part of Nordost-Bugt. Besides known from 
the district of Cape York. 
Abundantly flowering and fruiting 
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